Cevaplı Hemşirelik giriş sınavları için kimya çalışma kâğıdı

Which unit is commonly used for the density of a liquid?

1. Akg
2. BmL/g
3. Cg·mL
4. Dg/mL

Charles's law describes the relationship between which two properties of a gas, at constant pressure?

1. APressure and number of moles
2. BPressure and volume
3. CDensity and mass
4. DVolume and temperature

Which is a sign that a chemical reaction may have taken place?

1. ASugar dissolves completely when stirred into water
2. BWater freezes into ice when put in a freezer
3. CA block of wax melts when it is heated
4. DA gas is produced when two liquids are mixed

0,5 mol of KCl is dissolved to make 250 mL of solution. What is its molarity?

1. A0,125 M
2. B125 M
3. C2 M
4. D0,5 M

Which element has chemical properties most similar to calcium?

1. AMagnesium
2. BPotassium
3. CScandium
4. DCarbon

What is the mass of 0,5 mol of NaCl (molar mass 58,5 g/mol)?

1. A29,25 g
2. B0,5 g
3. C58,5 g
4. D117 g

In the fission reaction ²³⁵U + ¹n → ¹⁴¹Ba + ⁹²Kr + ? ¹n, how many neutrons are released?

1. A1
2. B4
3. C2
4. D3

Olive oil is liquid at room temperature, while butter is solid. Which explanation is correct?

1. AButter contains more water, which freezes at room temperature
2. BOlive oil molecules are ionic, while butter molecules are covalent
3. COlive oil has more C=C double bonds, which kink the chains so they cannot pack closely
4. DOlive oil has no C=C double bonds, so its chains stay straight and pack tightly